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Diablo83: Newbie | Next Rank: 10 Posts; Posts: 1; Joined: Mon Jan 24, 2011 9:27 am

by Diablo83 » Mon Jan 24, 2011 9:27 am

simplify:

(x^(-1) y^(-1))/(x y)^(-1)

give answer in (Ay^B + Cx^D)/(Exy) where a is positive

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Source: Beat The GMAT — Problem Solving | Mon Jan 24, 2011 9:27 am

Everest: Senior | Next Rank: 100 Posts; Posts: 35; Joined: Mon Jan 03, 2011 4:56 pmFollowed by: 1 member; Location: Calif; Thanked: 2 times

by Everest » Mon Jan 24, 2011 1:54 pm

simplify:

(x^(-1) y^(-1))/(x y)^(-1) = 1/x* 1/y/1/xy = xy/xy = 1

I did not get below statement.

give answer in (Ay^B + Cx^D)/(Exy) where a is positive

Can you please post proper question and choices.....this one is not clear

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